| 双负介质覆盖导体球宽带散射特性分析 |
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| 引用本文： | 王茂琰,徐军,魏兵,葛德彪. 双负介质覆盖导体球宽带散射特性分析[J]. 电子科技大学学报(自然科学版), 2007, 36(5): 880-882 |
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| 作者姓名： | 王茂琰 徐军 魏兵 葛德彪 |
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| 作者单位： | 电子科技大学物理电子学院,成都,610054;西安电子科技大学理学院,西安,710071 |
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| 基金项目： | 电波环境特性及模化技术国家级重点实验室基金 |
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| 摘 要： | 从双负介质的本构关系出发,给出了描述双负介质场与流的微分方程组,将其离散得到用于FDTD计算的三维递推表达式。与文献[5]结果对比并验证了本文该算法和程序的正确性。最后,计算了导体球覆盖双负介质或等离子体时的电磁散射。计算表明:由于模拟的双负介质是匹配介质,其吸波性能要明显地优于等离子体的;适当选取双负介质参数,可以使双负介质包层有效地减小目标的雷达回波。
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| 关 键 词： | 双负介质 电磁散射 时域有限差分法 等离子体 |
| 收稿时间： | 2006-06-19 |
| 修稿时间： | 2006-06-19 |
Analysis of Characteristic about Broadband Scattering of Metallic Sphere Covered by Double-Negative Metamaterials |
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| WANG Mao-yan,XU Jun,WEI Bing,GE De-biao. Analysis of Characteristic about Broadband Scattering of Metallic Sphere Covered by Double-Negative Metamaterials[J]. Journal of University of Electronic Science and Technology of China, 2007, 36(5): 880-882 |
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| Authors: | WANG Mao-yan XU Jun WEI Bing GE De-biao |
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| Affiliation: | 1.School of Physical Electronics,University of Electronic Science and Technology of China Chengdu 610054;2.School of Technical Physics,Xi'dian University Xi'an 710071 |
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| Abstract: | From double-negative (DNG) metamaterials' constitutive relation, we deduce the differential equations that describe characters of electromagnetic (EM) wave in DNG media. DNG media's three-dimension Finite-Difference Time-Domain (FDTD) formulation is obtained by dispersing those differential eguations. The calculation result is coincident with those in Ref.[5]. Finally, EM scattering of metallic sphere covered by DNG media or plasma is computed. Because of DNG media's impedance matched to the free space, its absorbing electromagnetic wave character is better than that of plasma. |
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| Keywords: | double-negative metamaterials EM scattering FDTD method plasma |
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